ABB MicroFlex e190, User Manual, Page: 52 / 210

52 Electrical installation: AC input / DC input, motor and brake

Procedure
Cabling drawings with tightening torques are presented on page 53 .

1. Strip the power cables so that the shields are bare at the cable clamps.
2. Twist the ends of the cable shield wires into pigtails.
3. Strip the ends of the phase conductors.
4. Connect the phase conductors of the supply cable to the L1 and L2 terminals of
the drive (or L1, L2 and L3 for three phase supply).

Connect the phase conductors of the motor cable to the U, V and W terminals.

Connect the conductors of the resistor cable (if present) to the R- and R+
terminals.
5. Tighten the cable clamps onto the bare cable shields.
6. Crimp a cable lug onto each shield pigtail. Fasten the lugs to ground terminals.

Note: Try to work out a compromise between the length of the pigtail and the
length of unshielded phase conductors as both should ideally be as short as
possible.
7. Cover visible bare shield and pigtail with insulating tape.
8. Secure the cables outside the unit mechanically.
9. Ground the other end of the supply cable shield or PE conductor(s) at the
distribution board. In case a mains choke and/or a mains filter is installed, make
sure the PE conductor is continuous from the distribution board to the drive.
Grounding the motor cable shield at the motor end
For minimum radio frequency interference, ground the cable shield 360 degrees at
the lead-through of the motor terminal box or ground the cable by twisting the shield
so that the flattened shield is wider than 1/5 of its length.
a
b
b > 1/5 · a
360 degrees grounding
Conductive gaskets